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BAEL-1247 Spring XML injection. (#2901)

This commit is contained in:
Muhammed Almas 2017-11-02 13:14:45 +05:30 committed by Grzegorz Piwowarek
parent d6cbbbedb4
commit 22f07214b1
10 changed files with 181 additions and 0 deletions
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5
spring-core/src/main/java/com/baeldung/di/spring/IService.java Normal file
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package com.baeldung.di.spring;
public interface IService {
public String serve();
}

19
spring-core/src/main/java/com/baeldung/di/spring/IndexApp.java Normal file
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package com.baeldung.di.spring;
public class IndexApp {
private IService service;
public String getServiceValue() {
return service.serve();
}
public IService getService() {
return service;
}
public void setService(IService service) {
this.service = service;
}
}

10
spring-core/src/main/java/com/baeldung/di/spring/IndexService.java Normal file
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package com.baeldung.di.spring;
public class IndexService implements IService {
@Override
public String serve() {
return "Hello World";
}
}

14
spring-core/src/main/java/com/baeldung/di/spring/InstanceServiceFactory.java Normal file
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package com.baeldung.di.spring;
public class InstanceServiceFactory {
public IService getService(int number) {
switch (number) {
case 1:
return new MessageService("Foo");
case 0:
return new IndexService();
default:
throw new IllegalArgumentException("Unknown parameter " + number);
}
}
}

14
spring-core/src/main/java/com/baeldung/di/spring/MessageApp.java Normal file
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package com.baeldung.di.spring;
public class MessageApp {
private IService iService;
public MessageApp(IService iService) {
this.iService = iService;
}
public String getServiceValue() {
return iService.serve();
}
}

16
spring-core/src/main/java/com/baeldung/di/spring/MessageService.java Normal file
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package com.baeldung.di.spring;
public class MessageService implements IService {
private String message;
public MessageService(String message) {
this.message = message;
}
@Override
public String serve() {
return message;
}
}

14
spring-core/src/main/java/com/baeldung/di/spring/StaticServiceFactory.java Normal file
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@ -0,0 +1,14 @@
package com.baeldung.di.spring;
public class StaticServiceFactory {
public static IService getService(int number) {
switch (number) {
case 1:
return new MessageService("Foo");
case 0:
return new IndexService();
default:
throw new IllegalArgumentException("Unknown parameter " + number);
}
}
}

1
spring-core/src/main/resources/com.baeldung.di.spring.properties Normal file
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message.value=Hello World

43
spring-core/src/main/resources/com.baeldung.di.spring.xml Normal file
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<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
<bean id="indexService" class="com.baeldung.di.spring.IndexService" />
<bean id="messageService" class="com.baeldung.di.spring.MessageService" scope="prototype">
<constructor-arg value="${message.value}" />
</bean>
<bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="location" value="com.baeldung.di.spring.properties" />
</bean>
<bean id="messageServiceFromStaticFactory" class="com.baeldung.di.spring.StaticServiceFactory"
factory-method="getService">
<constructor-arg value="1" />
</bean>
<bean id="indexServiceFactory" class="com.baeldung.di.spring.InstanceServiceFactory" />
<bean id="messageServiceFromInstanceFactory" class="com.baeldung.di.spring.InstanceServiceFactory"
factory-method="getService" factory-bean="indexServiceFactory">
<constructor-arg value="1" />
</bean>
<bean id="indexApp" class="com.baeldung.di.spring.IndexApp">
<property name="service" ref="indexService" />
</bean>
<bean id="indexAppWithStaticFactory" class="com.baeldung.di.spring.IndexApp" scope="prototype">
<property name="service" ref="messageServiceFromStaticFactory" />
</bean>
<bean id="indexAppWithFactoryMethod" class="com.baeldung.di.spring.IndexApp" scope="prototype">
<property name="service" ref="messageServiceFromInstanceFactory" />
</bean>
<bean id="messageWorldApp" class="com.baeldung.di.spring.MessageApp" scope="prototype">
<constructor-arg ref="messageService" />
</bean>
</beans>

45
spring-core/src/test/java/com/baeldung/di/spring/BeanInjectionTest.java Normal file
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package com.baeldung.di.spring;
import static org.junit.Assert.*;
import org.junit.Before;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class BeanInjectionTest {
private ApplicationContext applicationContext;
@Before
public void setUp() throws Exception {
applicationContext = new ClassPathXmlApplicationContext("com.baeldung.di.spring.xml");
}
@Test
public void protoBean_getBean_returnsMultipleInstance() {
final MessageApp messageApp1 = applicationContext.getBean("messageWorldApp", MessageApp.class);
final MessageApp messageApp2 = applicationContext.getBean("messageWorldApp", MessageApp.class);
assertNotEquals(messageApp1, messageApp2);
}
@Test
public void protoFactoryMethod_getBean_returnsMultipleInstance() {
final IndexApp indexApp1 = applicationContext.getBean("indexAppWithFactoryMethod", IndexApp.class);
final IndexApp indexApp2 = applicationContext.getBean("indexAppWithFactoryMethod", IndexApp.class);
assertNotEquals(indexApp1, indexApp2);
}
@Test
public void protoStaticFactory_getBean_returnsMultipleInstance() {
final IndexApp indexApp1 = applicationContext.getBean("indexAppWithStaticFactory", IndexApp.class);
final IndexApp indexApp2 = applicationContext.getBean("indexAppWithStaticFactory", IndexApp.class);
assertNotEquals(indexApp1, indexApp2);
}
@Test
public void singletonBean_getBean_returnsSingleInstance() {
final IndexApp indexApp1 = applicationContext.getBean("indexApp", IndexApp.class);
final IndexApp indexApp2 = applicationContext.getBean("indexApp", IndexApp.class);
assertEquals(indexApp1, indexApp2);
}
}